We’re getting around to doing our FY21 planning for the Excel team, and I thought it might be worth looking back a bit and sharing the high level FY20 plans and how we’re doing against them. For folk...
As you have indicated the site doesn't currently capture what has been taken into consideration. Might I suggest that your team implement a similar approach to the experience.dynamics.com product suggestions.
Where by each suggestion is tagged with a status of "Completed", "In Review", "Needs Votes". This would then assist your team in focusing on some of the higher voted items, and would also provide more visibility to users.
It would also provide the visibility that you described of features your team has completed suggestions that "make excel better".
Are you able to shed any light on when the Conditional Formatting applied to named ranges is likely to be incorporated into future versions? It would be great to understand where this is in the Excel teams Road-Map as it is one of the most voted items, has been open since 2015 and still has a status of "Accepting Votes".